Stepped check valves
AssigneeCareFusion 303, Inc.
InventorRaymond P. FEITH
Life of this patent
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Abstract
A check valve includes an upper housing defining an inlet of the check valve, a lower housing defining an outlet of the check valve, and a cavity interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet. The check valve further includes a valve member mounted in the cavity to selectively permit fluid flow in a first direction, and prevent fluid backflow in a second direction opposite to the first direction. The valve member includes a valve body and a valve stem portion extending axially through a central axis of the valve body.
Claims20
A check valve, comprising:
- an upper housing defining an inlet of the check valve;
- a lower housing defining an outlet of the check valve, wherein a cavity is interposed between and defined by the upper housing and lower housing for fluidly connecting the inlet and the outlet;
- and
- a valve member seated in the cavity to selectively permit fluid flow in a first direction and restrict fluid backflow in a second direction opposite to the first direction.
A method for assembling a check valve, comprising:
- providing an upper housing defining an inlet of the check valve;
- providing a lower housing defining an outlet of the check valve, wherein a cavity interposed between and defined by the upper and lower housings for fluidly connecting the inlet and the outlet;
- and
- providing a valve member seated in the cavity to selectively permit fluid flow in a first direction, and restrict fluid backflow in a second direction opposite to the first direction, comprising:
- placing the valve member in the upper housing and vibrating the valve member and upper housing until the valve member is fully seated in the upper housing.
Dependencies are inferred from the claim text.